Bluelab pH Probe
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Bluelab pH Probe


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    • Doublejunction probe reduces reference contamination, extending longevity  
    • Fully waterproof – not just water resistant  
    • BNC connector allows use with all other compatible Bluelab products  
    • 2metre cable for measuring in hardtoreach locations 
    • Use the included storage cap with KCl to lengthen probe’s lifespan 
    • Fast sensor response ensures quick and accurate measurements  
    • Polycarbonate housing for long-lasting strength  
    • Effective in solutions of 0.2 EC and above 

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Why measure pH?

Understand the science behind healthy plants

Just like humans, all growing plants need a balanced diet of nutrients (food) in order to thrive. However, your plants will only be able to access these nutrients if the nutrient solution is within a particular pH range.  

From a water chemistry perspective, pH (potential Hydrogen) plays a critical role in making nutrients soluble so that they can be absorbed by your plants. When your growing solution becomes too acidic or too alkaline, your plants won’t be able to access the nutrients they need to grow. 

Get the fundamentals of growing right by regularly measuring pH to ensure that this is always within the optimal range.  

Durable and affordable probe technology

Accurate and quick pH measurements

The durable Bluelab pH Probe has been designed with longevity in mind, with a double-junction probe, polycarbonate housing and high-quality electrical components  

Created with advanced and affordable technology, you can rely on Bluelab’s pH Probe to give you accurate and fast measurements every single time.   

Designed and built in New Zealand with growers in mind

All our products are designed with growers, for growers – so you can be confident that the Bluelab pH Probe will help you carry out the essential tasks of everyday growing with ease. This fully waterproof product can even be left inside your reservoir for continual monitoring or spot checking.  

Bluelab pH Probe maintenance

Extend the life of your pH probe


You need to regularly clean and maintain your Bluelab pH Probe to ensure its ongoing accuracy and longevity. 

Use Bluelab’s Probe Care Kit, which contains everything you need to clean and care for your pH probe. Every time you clean your probe, calibrate it using Bluelab Calibration Solutions.  

 In addition, boost your probe’s lifespan by ensuring that its tip stays wet at all times. Use the included storage cap whenever you’re not using your probe and regularly top up the amount of KCl inside the cap.  

This probe is compatible with all Bluelab products with a corresponding BNC connector, such as the Combo Meter and Guardian Monitor. 

Additional information

Weight 1 kg
Dimensions 10 × 20 × 3 cm


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